Calculation method and system for load margin of electrical coupling system based on continuous multi-energy flow

A technology of electrical coupling and calculation method, applied in the direction of calculation, electrical components, AC network circuits, etc., can solve the problems of not considering the primary energy supply, improper operation constraint results, etc., and achieve the effect of accurate calculation and improved load margin

Active Publication Date: 2021-08-03
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method and system for calculating the load margin of an electrical coupling system based on continuous multi-energy flow, so as to solve the problem that the traditional load margin calculation does not consider the primary energy supply of NGU and the operating constraints of the natural gas system. Improper problem, realize accurate calculation of power system load margin under the background of deep coupling of power system and natural gas system, to optimize online evaluation of system static stability, and improve the ability of static stability analysis of electrical coupling system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Calculation method and system for load margin of electrical coupling system based on continuous multi-energy flow
  • Calculation method and system for load margin of electrical coupling system based on continuous multi-energy flow
  • Calculation method and system for load margin of electrical coupling system based on continuous multi-energy flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] This embodiment provides a method for calculating the load margin of an electrical coupling system based on continuous multi-energy flow, which includes:

[0077] Step 1: Establish a multi-energy flow model considering the safety constraints of the electrically coupled system

[0078] For a typical IEGS, the electricity system and the natural gas system are coupled together through a gas unit. Firstly, the multi-energy flow models of electric power system, natural gas system and gas-fired unit and the safety constraints of the system are given.

[0079] 1) Natural gas system model

[0080] The node variables of the natural gas system include the flow rate of injected natural gas and the node air pressure. Like the node classification of the power system, nodes can be divided into nodes with known pressure and nodes with known injection flow rate according to known variables. In a natural gas system, the gas source is a balance node, whose gas pressure is known but the...

Embodiment 2

[0139] This embodiment provides a load margin calculation system for an electrical coupling system based on continuous multi-energy flow, which includes:

[0140] The multi-energy flow model establishment unit is used to establish the multi-energy flow model considering the safety constraints of the electrical coupling system, including the multi-energy flow model of the natural gas system model, the electrical system model and the gas generating set model;

[0141] The formation unit of multi-energy flow calculation method: imitating the continuous power flow, introducing load growth parameters to form a continuous multi-energy flow calculation method;

[0142] System load margin calculation unit: The continuous multi-energy flow calculation method is used to track the multi-energy flow solution curve and calculate the system load margin.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a load margin calculation method and system of an electrical coupling system based on continuous multi-energy flow. The traditional load margin calculation does not take into account the primary energy supply of the gas generator set and the operating constraints of the natural gas system. The technical solution adopted by the present invention includes: establishing a multi-energy flow model considering the safety constraints of the electrical coupling system, including the multi-energy flow model of the natural gas system, the electric power system and the gas generating set; imitating the continuous flow, introducing load growth parameters, and proposing a continuous multi-energy The flow calculation method is used to solve the relationship curve between the gas network node pressure, the grid node voltage and the load margin, and calculate the system load margin. The method of the present invention can determine the load margin of the electrical coupling system, analyzes the impact of the natural gas system safety constraints on the load margin, provides a reference for the adjustment of the operating state of the natural gas system, and is of great significance to the online evaluation of the static stability of the system, which is helpful The system dispatcher monitors the stability of the system operation.

Description

technical field [0001] The invention belongs to the technical field of power system voltage stability index optimization, and in particular relates to a load margin calculation method and system for an electrical coupling system based on continuous multi-energy flow. Background technique [0002] In recent years, the share of natural gas-fired units (NGUs) in the power system has been continuously increasing due to their good economy, fast adjustment ability and low pollution emission characteristics. With the rapid increase of the power generation share of gas-fired units, electric power systems (EPSs) and natural gas systems (NGSs) have gradually formed a unified integrated system-electrically coupled system (IEGS). Therefore, as the coupling becomes tighter, the interaction effects between different energy supply systems should be closely monitored. [0003] At present, relevant research work on IEGS has been carried out at home and abroad: some studies use P2G technolog...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q50/06
CPCH02J3/00G06Q50/06H02J2203/20
Inventor 李志浩倪筹帷汪湘晋林达赵波
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap